Extreme Science

Which element is able to combine in many ways with different elements and is therefore considered the basis of life?

• Oxygen

• Nitrogen

• Carbon

• Hydrogen

Which element provides strength to bones?

• Sulfur

• Phosphorus

• Nitrogen

• Hydrogen

Which elements make up a water molecule?

• hydrogen and nitrogen

• oxygen and nitrogen

• oxygen and carbon

• hydrogen and oxygen

Which statement describes carbohydrates?

• Carbohydrates store and transmit an organism’s genetic information.

• Carbohydrates provide energy to organisms.

• Carbohydrates help with an organism’s tissue growth and repair.

• Carbohydrates provide an organism with long-term energy storage.

Which type of molecule is used by organisms to store and transmit genetic information?

• nucleic acids

• proteins

• lipids

• carbohydrates

Aluminum is an element. Which best describes what makes up a sample of aluminum?

• one kind of atom

• two different kinds of atoms

• all carbon-based atoms

• a carbon atom and non-carbon atoms

Which kind of molecule is used by organisms to store and transmit genetic material?

• nucleic acid

• carbohydrate

• protein

• lipid

Which element is the basis for all living things and can combine with other elements in many ways?

• phosphorus

• carbon

• oxygen

• sulfur

Which element is the most prevalent in the human body?

• nitrogen

• hydrogen

• carbon

• oxygen

Which statement is true about inorganic compounds?

• They are not made of atoms.

• They contain carbon.

• They are not made from living things.

• They are all elements.